An empirical test on long memory between price and trading volume of China metals futures market was given with MF-DCCA method. The empirical results show that long memory feature with a certain period exists in price−volume correlation and a further proof was given by analyzing the source of multifractal feature. The empirical results suggest that it is of important practical significance to b...

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A generation ago, the efŽ cient market hypothesis was widely accepted by academic Ž nancial economists; for example, see Eugene Fama’s (1970) in uential survey article, “EfŽ cient Capital Markets.” It was generally believed that securities markets were extremely efŽ cient in re ecting information about individual stocks and about the stock market as a whole. The accepted view was that when in...

Compelling evidence exists to show that the structure of molecular clouds is fractal in nature. In this poster, the author reiterates that view and, in addition, asserts that not only is cloud geometry fractal, but that they also have a common characteristic they are similar in shape to the Horsehead in Orion. This shape can be described by the Julia function f(z) = z + c,where both z and c are...

information asymmetry in stock market can increase the risk of investment which in turn increases the capital cost of firms. bhattacharya (1979) proposed a hypothesis that states dividend can act as a powerful signal in order to solve information asymmetry problem. we measured information asymmetry by lack of earnings transparency. therefore we examine the effect of earnings transparency on cap...

Information asymmetry in stock market can increase the risk of investment which in turn increases the capital cost of firms. Bhattacharya (1979) proposed a hypothesis that states dividend can act as a powerful signal in order to solve information asymmetry problem. We measured information asymmetry by lack of earnings transparency. Therefore we examine the effect of earnings transparency on cap...

the main objective of this paper is to investigate the effect of innovation on the market share instability in the iranian food and drinking industry with a 4- digit code. according to schumpeter that states one of the most important hypothesis in this area, says there are a non-linear and an inverse of u-shaped relationship between the two variables of innovation and market share instability. ...

The electroencephalogram (EEG) is a record of the oscillations of brain electric potentials. The EEG provides a convenient window on the mind, revealing synaptic action that strongly co-relate with brain state. Fractal dimension, the measure of signal complexity can be used to characterize the physiological conditions of the brain. As the EEG signal is non linear, non stationary and noisy, non ...